hamilgs
Veteran Member
\'97 US Passat (B4) rough running for first 30 seconds
Our '97 US spec Passat TDI (96K miles) is starting fine, but recently stumbling and belching grey smoke for about the first 30 seconds. From the driver's seat, you can feel the engine bucking and kicking, tranny in neutral. Smooths out after 30 seconds or so. My favorite 16 year old is the prime driver, and she's been complaining of poor fuel mileage. How poor I ask her, and she does not know-won't reset trip odo at each fill up, and write down results. What I have done already: Recent fuel filter, air filter, cleaned snow screen in airbox (half clogged), checked upstream (airbox) screen on air flow meter. Temperatures outside (car not garaged) are moderate; 55F-80F, so I don't think glow plugs are at fault. No check engine light. Have wondered about an injector having poor spray pattern, and -heaven forbid-low compression on one cylinder.--george
Our '97 US spec Passat TDI (96K miles) is starting fine, but recently stumbling and belching grey smoke for about the first 30 seconds. From the driver's seat, you can feel the engine bucking and kicking, tranny in neutral. Smooths out after 30 seconds or so. My favorite 16 year old is the prime driver, and she's been complaining of poor fuel mileage. How poor I ask her, and she does not know-won't reset trip odo at each fill up, and write down results. What I have done already: Recent fuel filter, air filter, cleaned snow screen in airbox (half clogged), checked upstream (airbox) screen on air flow meter. Temperatures outside (car not garaged) are moderate; 55F-80F, so I don't think glow plugs are at fault. No check engine light. Have wondered about an injector having poor spray pattern, and -heaven forbid-low compression on one cylinder.--george